FPGA/oh
1
0
Fork 0
mirror of https://github.com/aolofsson/oh.git synced 2025-01-30 02:32:53 +08:00
Code Issues Projects Releases Wiki Activity

Updating register names and fixing error in description of RXCFG

Browse Source
This commit is contained in:
Andreas Olofsson 2015-11-11 14:26:46 -05:00
parent 1ddbc4c0a8
commit dccaadc286
1 changed files with 57 additions and 155 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

212
elink/README.md
View File

@ -194,35 +194,33 @@ Instance |Module | FPGA Cells
The full 32 bit physical address of an elink register is the address seen below added to the 12 bit elink ID that maps to address bits 31:20. As an example, if the elink ID is 0x810, then writing to the E_RESET register would be done to address 0x810F0200. Readback is done through the txrd channel with the source address sub field set to 810Dxxxx;
REGISTER | ACCESS | ADDRESS | DESCRIPTION
---------------|--------|---------|------------------
E_RESET | -W | 0xF0200 | Soft reset
E_CLK | -W | 0xF0204 | Clock configuration
E_CHIPID | RW | 0xF0208 | Chip ID for Epiphany pins
E_VERSION | RW | 0xF020C | Version number (static)
***************|********|*********|**************************
ETX_CFG | RW | 0xF0210 | TX configuration
ETX_STATUS | R- | 0xF0214 | TX status
ETX_GPIO | RW | 0xF0218 | TX data in GPIO mode
***************|********|*********|********************
ETX_MMU | -W | 0xE0000 | TX MMU table
***************|******* |*********|********************
ERX_CFG | RW | 0xF0300 | RX configuration
ERX_STATUS | R- | 0xF0304 | RX status register
ERX_GPIO | R- | 0xF0308 | RX data in GPIO mode
ERX_OFFSET | RW | 0xF030C | RX mem offset in remap mode
E_MAILBOXLO | RW | 0xF0310 | RX mailbox (lower 32 bit)
E_MAILBOXHI | RW | 0xF0314 | RX mailbox (upper 32 bits)
ERX_IDELAY0 | RW | 0xF0318 | RX idelays 4 bit values d[7:0]
ERX_IDELAY1 | RW | 0xF031C | RX idelay msbs and frametap lsbs
ERX_TESTDATA | RW | 0xF0320 | RX sampled data
***************|********|*********|********************
ERX_MMU | -W | 0xE8000 | RX MMU table
REGISTER | ACCESS | ADDRESS | DESCRIPTION
----------------|--------|---------|------------------
ELINK_RESET | -W | 0xF0200 | Soft reset
ELINK_CLK | -W | 0xF0204 | Clock configuration
ELINK_CHIPID | RW | 0xF0208 | Chip ID for Epiphany pins
ELINK_VERSION | RW | 0xF020C | Version number (static)
****************|********|*********|**************************
ELINK_TXCFG | RW | 0xF0210 | TX configuration
ELINK_TXSTATUS | R- | 0xF0214 | TX status
ELINK_TXGPIO | RW | 0xF0218 | TX data in GPIO mode
ELINK_TXMMU | -W | 0xE0000 | TX MMU table
****************|******* |*********|********************
ELINK_RXCFG | RW | 0xF0300 | RX configuration
ELINK_RXSTATUS | R- | 0xF0304 | RX status register
ELINK_RXGPIO | R- | 0xF0308 | RX data in GPIO mode
ELINK_RXOFFSET | RW | 0xF030C | RX mem offset in remap mode
ELINK_MAILBOXLO | RW | 0xF0310 | RX mailbox (lower 32 bit)
ELINK_MAILBOXHI | RW | 0xF0314 | RX mailbox (upper 32 bits)
ELINK_RXDELAY0 | RW | 0xF0318 | RX idelays 4 bit values d[7:0]
ELINK_RXDELAY1 | RW | 0xF031C | RX idelay msbs and frametap lsbs
ELINK_RXTESTDATA| RW | 0xF0320 | RX sampled data
ELINK_RXMMU | -W | 0xE8000 | RX MMU table
REGISTER DESCRIPTIONS
===========================================
###E_RESET (0xF0200)
###ELINK_RESET (0xF0200)
Reset control register for the elink and Epiphany chip
FIELD | DESCRIPTION
@ -232,7 +230,7 @@ FIELD | DESCRIPTION
-------------------------------
###E_CLK (0xF0204) (NOT IMPLEMENTED)
###ELINK_CLK (0xF0204) (NOT IMPLEMENTED)
Transmit and Epiphany clock settings.
FIELD | DESCRIPTION
@ -267,7 +265,7 @@ FIELD | DESCRIPTION
-------------------------------
###E_CHIPID (0xF0208)
###ELINK_CHIPID (0xF0208)
Column and row chip id pins to the Epiphany chip.
FIELD | DESCRIPTION
@ -277,7 +275,7 @@ FIELD | DESCRIPTION
-------------------------------
###E_VERSION (0xF020C)
###ELINK_VERSION (0xF020C)
Platform and revision number.
FIELD | DESCRIPTION
@ -287,7 +285,7 @@ FIELD | DESCRIPTION
-------------------------------
###ETX_CFG (0xF0210)
###ELINK_TXCFG (0xF0210)
TX configuration settings
FIELD | DESCRIPTION
@ -314,7 +312,7 @@ FIELD | DESCRIPTION
-------------------------------
###ETX_STATUS (0xF0214)
###ELINK_TXSTATUS (0xF0214)
TX status register
FIELD | DESCRIPTION
@ -323,7 +321,7 @@ FIELD | DESCRIPTION
-------------------------------
###ETX_GPIO (0xF0218)
###ELINK_TXGPIO (0xF0218)
Data to drive on txo_data and txo_frame pins in gpio mode
FIELD | DESCRIPTION
@ -333,24 +331,32 @@ FIELD | DESCRIPTION
-------------------------------
###ERX_CFG (0xF0300)
###ELINK_TXMMU (0xE0000)
A table of N entries for translating incoming 12 bit address to a new value. Entries are aligned on 8 byte boundaries
FIELD | DESCRIPTION
-------- |---------------------------------------------------
[11:0] | Output address bits 31:20
[43:12] | Output address bits 63:32 (TBD)
###ELINK_RXCFG (0xF0300)
RX configuration register
FIELD | DESCRIPTION
-------- |---------------------------------------------------
[0] | 0: RX frame signal disabled
| 1: RX enabled
[0] | 0: Normal Reciever mode
| 1: Puts RX in testmode
[1] | 0: MMU disabled
| 1: MMU enabled
[3:2] | RX address remapping mode
| 00: pass-through mode, remapping disabled
| 01: "static" remap_addr =
| (remap_sel[11:0] & remap_pattern[11:0]) |
| (~remap_sel[11:0] & addr_in[31:20]);
| (~remap_sel[11:0] & addr_in[31:20]);
| 10: "dynamic" remap_addr =
| addr_in[31:0]
| - (colid << 20)
| + ERX_OFFSET[31:0]
| - (colid << 20)
| + ERX_OFFSET[31:0]
| - (addr_in[31:26]<<clog2(colid));
[15:4] | Remap selection for "01" remap method
| "1" means remap bit is selected
@ -363,14 +369,14 @@ FIELD | DESCRIPTION
-------------------------------
###ERX_STATUS (0xF0304)
###ELINK_RXSTATUS (0xF0304)
RX status register
FIELD | DESCRIPTION
-------- |---------------------------------------------------
[15:0] | TBD
###ERX_GPIO (0xF0308)
###ELINK_RXGPIO (0xF0308)
RX status register. Data sampled on rxi_data and rxi_frame pins in gpio mode
FIELD | DESCRIPTION
@ -378,18 +384,25 @@ FIELD | DESCRIPTION
[7:0] | Data from rxi_data pins
[8] | Data from rxi_frame pin
###ERX_OFFSET (0xF030C)
###ELINK_RXOFFSET (0xF030C)
Address offset used in the dynamic address remapping mode.
FIELD | DESCRIPTION
-------- |---------------------------------------------------
[31:0] | Memory offset
-------------------------------
###ELINK_MAILBOXLO (0xF0310)
Lower 32 bit word of current entry of RX 64-bit wide mailbox FIFO. Must be read before ELINK_MAILBOXHI is read
FIELD | DESCRIPTION
-------- |---------------------------------------------------
[31:0] | Upper data of RX FIFO
-------------------------------
###E_MAILBOXHI (0xF0314)
###ELINK_MAILBOXHI (0xF0314)
Upper 32 bit word of current entry of RX 64-bit wide mailbox FIFO. Reading this register causes the RX FIFO read pointer to increment by one.
FIELD | DESCRIPTION
@ -398,16 +411,7 @@ FIELD | DESCRIPTION
-------------------------------
###E_MAILBOXHI (0xF0314)
Upper 32 bit word of current entry of RX 64-bit wide mailbox FIFO. Reading this register causes the RX FIFO read pointer to increment by one.
FIELD | DESCRIPTION
-------- |---------------------------------------------------
[31:0] | Upper data of RX FIFO
-------------------------------
###ERX_IDELAY0O (0xF0318)
###ELINK_RXDELAY0 (0xF0318)
Four bit LSB fields for the RX IDELAY of data bits [7:0]
FIELD | DESCRIPTION
@ -423,7 +427,7 @@ FIELD | DESCRIPTION
-------------------------------
###ERX_IDELAY01 (0xF031c)
###ELINK_RXDELAY1 (0xF031c)
MSB field for all RX IDELAY values and lsbs for frame signal
FIELD | DESCRIPTION
@ -441,104 +445,7 @@ FIELD | DESCRIPTION
-------------------------------
###ERX_DMACFG (0xF0500)
Configuration register for DMA.
FIELD | DESCRIPTION
-------- |---------------------------------------------------
[0] | 0: DMA disabled
| 1: DMA enabled
[1] | 0: Slave mode
| 1: Master mode
[6:5] | 00: byte transfers
| 01: half-word transfers
| 10: word transfers
| 11: double word transfers
[10] | 0: Message mode disabled
| 1: Enables special message mode
[11] | 0: Source address shift disabled
| 1: Left shifts stride by 16 bits
[12] | 0: Destination address shift disabled
| 1: Left shifts stride by 16 bits
-------------------------------
###ERX_DMACOUNT (0xF0504)
The number of DMA left to complete The DMA transfer is complete when the DMACOUNT register reaches zero.
FIELD | DESCRIPTION
-------- |---------------------------------------------------
[31:0] | The number of transfers remaining
-------------------------------
###ERX_DMASTRIDE (0xF0508)
Two signed 16-bit values specifying the stride, in bytes, used to update the DMASRCADDR and DMADSTADDR after each completed transfer.
FIELD | DESCRIPTION
-------- |---------------------------------------------------
[15:0] | Value to add to DMASRCADDR after each transaction
[31:16] | Value to add to DMADSTADDR after each transaction
-------------------------------
###ERX_DMASRCADDR (0xF050C)
The current 32-bit address being read from in master mode.
FIELD | DESCRIPTION
-------- |---------------------------------------------------
[31:0] | Current transaction destination address to write to
-------------------------------
###ERX_DMADSTADDR (0xF0510)
The current 32-bit address being transferred.
FIELD | DESCRIPTION
-------- |---------------------------------------------------
[31:0] | Current transaction destination address to write to
-------------------------------
###ERX_DMAAUTO0 (0xF0514)
Auto DMA register
FIELD | DESCRIPTION
-------- |---------------------------------------------------
[31:0] | TBD
-------------------------------
###ERX_DMAAUTO1 (0xF0518)
Auto DMA register
FIELD | DESCRIPTION
-------- |---------------------------------------------------
[31:0] | TBD
-------------------------------
###DMASTATUS (0xF051c/0xF053c)
DMA status register
FIELD | DESCRIPTION
-------- |---------------------------------------------------
[31:0] | TBD
-------------------------------
###ETX_MMU (0xE0000)
A table of N entries for translating incoming 12 bit address to a new value. Entries are aligned on 8 byte boundaries
FIELD | DESCRIPTION
-------- |---------------------------------------------------
[11:0] | Output address bits 31:20
[43:12] | Output address bits 63:32 (TBD)
-------------------------------
###ERX_MMU (0xE8000)
###ELINK_RXMMU (0xE8000)
A table of N entries for translating incoming 12 bit address to a new value. Entries are aligned on 8 byte boundaries.
FIELD | DESCRIPTION
@ -546,8 +453,3 @@ FIELD | DESCRIPTION
[11:0] | Output address bits 31:20
[43:12] | Output address bits 63:32 (TBD)
-------------------------------
###ERX_READBACK (0xDxxxx)
Source address to specify for slave (host) read requests